Initial commit

cpp/programs/random.cpp

@@ -0,0 +1,98 @@
+#include <iostream>
+#include <random>
+#include <ctime>
+
+using namespace std;
+
+
+typedef mt19937 MyRNG;
+// uint32_t seed_val;
+
+MyRNG rng;
+bool rngInitialized = false;
+
+const string ALPHABET = "abcdefghijklmnopqrstuvwxyz ";
+const string DESIRED_STRING = "methinks it is like a weasel"; 
+
+
+void initialize_random() {
+	rng.seed(time(0));
+}
+
+
+int randint(int start, int end) {
+	if (!rngInitialized) {
+		initialize_random();
+		rngInitialized = true;
+	}
+
+	uniform_int_distribution<uint32_t> myDist(start, end);
+	return myDist(rng);
+}
+
+
+string generate_string(string seed) {
+	string result;
+	for (int i = 0; i < DESIRED_STRING.length(); i++) {
+		if (seed[i] == DESIRED_STRING[i]) {
+			result = result + seed[i];
+		} else {
+			result = result + ALPHABET[randint(0, 26)];
+		}
+	}
+	return result;
+}
+
+
+string generate_string() {
+	string seed;
+	for (int i = 0; i < DESIRED_STRING.length(); i++) {
+		seed = seed + '-';
+	}
+	return generate_string(seed);
+}
+
+
+int appraise_string(string str) {
+	if (str == DESIRED_STRING) {
+		return 100;
+	}
+
+	int correct = 0;
+	for (int i = 0; i < str.length(); i++) {
+		if (str[i] == DESIRED_STRING[i]) {
+			correct++;
+		}
+	}
+
+	return (correct * 100) / DESIRED_STRING.length();
+} 
+
+
+int main() {
+	string res = generate_string();
+	int current_attempt = appraise_string(res);
+	int best_attempt = current_attempt;
+	string best_attempt_str = res;
+
+	int counter = 0;
+	while(current_attempt != 100) {
+		res = generate_string(best_attempt_str);
+		current_attempt = appraise_string(res);
+
+		if (current_attempt > best_attempt) {
+			best_attempt = current_attempt;
+			best_attempt_str = res;
+		}
+
+		if (counter == 1000) {
+			cout << "Current best attempt with " << best_attempt << "%: " << best_attempt_str << endl;
+			counter = 0;
+		}
+
+		counter++;
+	}
+	
+	cout << "Generated result with counter at " << counter << endl;
+	return 0;
+}